gamma-intensity

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• Gamma correction — Gamma correction, gamma nonlinearity, gamma encoding, or often simply gamma, is the name of a nonlinear operation used to code and decode luminance or tristimulus values in video or still image systems. [cite book | title = Digital Video and HDTV …   Wikipedia

• Gamma ray — Gamma rays (denoted as gamma;) are a form of electromagnetic radiation or light emission of frequencies produced by sub atomic particle interactions, such as electron positron annihilation or radioactive decay. Gamma rays are generally… …   Wikipedia

• Gamma ray burst progenitors — are the types of celestial objects that can emit gamma ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly… …   Wikipedia

• Gamma knife — Gamma Knife® (or Leksell Gamma Knife®) is a device used to treat brain tumors with a high dose of radiation therapy in one day. The device was invented by Lars Leksell, a Swedish neurosurgeon, in 1967 at the Karolinska Institute in Sweden. Gamma… …   Wikipedia

• gamma — [gam′ə] n. [ME < Gr < Sem, as in Heb gimel, akin to gamal, camel] 1. the third letter of the Greek alphabet (Γ, γ) 2. the third of a group or series 3. a microgram 4. a number indicating the degree of contrast between the darkest and… …   English World dictionary

• Gamma spectroscopy — The gamma ray spectrum of natural uranium, showing about a dozen discrete lines superimposed on a smooth continuum, allows the identification the nuclides 226Ra, 214Pb, and 214Bi of the uranium decay chain. Gamma ray spectroscopy is the… …   Wikipedia

• Gamma ray spectrometer — A Gamma Ray Spectrometer, or (GRS), is an instrument for measuring the distribution (or spectrum see figure) of the intensity of gamma radiation versus the energy of each photon. Gamma rays are electromagnetic radiation at the short wavelength,… …   Wikipedia

• Gamma process — A Gamma process is a Lévy process with independent Gamma increments. Often written as Gamma(t;gamma,lambda), it is a pure jump increasing Levy process with intensity measure u(x)=gamma x^{ 1}exp( lambda x), for positive x. Thus jumps whose size… …   Wikipedia

• Gamma distribution — eta m = V {3m} e^{ xi m}. # If eta m > xi m^{delta 1} e^{ xi m}, then increment m and go to step 2. # Assume xi = xi m to be the realization of Gamma (delta, 1)Now, to summarize,: heta left( xi sum {i=1} ^{ [k] } {ln U i} ight) sim Gamma (k,… …   Wikipedia

• Gamma Cassiopeiae — Starbox begin name=Gamma Cassiopeiae Starbox observe epoch=J2000 ra=00h 56m 42.5s dec=+60° 43 prime; 00 Prime; appmag v=2.15 constell=Cassiopeia Starbox character class=B0.5 IVe b v= 0.15 u b= 1.08 variable=Gamma Cas Starbox astrometry radial v=… …   Wikipedia

• gamma — 1. Third letter of the Greek alphabet, γ. 2. A unit of magnetic field intensity equal to 10−9 T. [G.] * * * gam·ma gam ə n 1) the third letter of the Greek alphabet symbol Gamma or gamma 2) a unit of magnetic flux density equal to one nanotesla… …   Medical dictionary